Maths Strategies

Maths Modelling Examples.
http://www.mathtrain.tv/
http://www.teachertools.co.nz/lessons-more/
http://www1.teachertube.com/
http://sketchup.google.com/
http://wildaboutmath.com/2007/12/01/mathcast-2-quick-multiplication-of-two-2-digit-numbers/
Check these maths animations out made by Room 10 students.

Made by Sean.



GoAnimate.com: 8's by ocean lily


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Made by Lily

Made by Jaymie
GoAnimate.com: Division help by jaymie26


Like it? Create your own at GoAnimate.com. It's free and fun!
Look at my division animation.

This week students have been changing division sums to multiplication sums.


Example:

12 divided by 3 is the same as 12=3 x ?
15 divided by 5 is the same as 15=5 x?



Students have been learning how to solve sums such as 3 x 356 by breaking up
356 into hundreds 300, Tens 50 and Ones 6 .

Strategies

Example

I want to know what 8X7 equals. So try 7X7 or 9X7.
If you use 7X7, you work out square numbers. Square numbers are like this: 2X2

3X3

4X4

5X5

and so on

7X7=49.
If you use 9X7, think of 10X7. 10X7=70. -7=63

The answer you have is 56

7X7=49
9X7=63
2X7=14
4X7=28
8X5=40+16=56